<<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Page Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
        .wrap {
        height: 40px;
        line-height: 20px;
        overflow: hidden;
        }
        .wrap .text {
        float: right;
        margin-left: -5px;
        width: 100%;
        word-break: break-all;
        }
        .wrap::before {
        float: left;
        width: 5px;
        content: '';
        height: 40px;
        }
        .wrap::after {
        float: right;
        content: "...";
        height: 20px;
        line-height: 20px;
        /* 为三个省略号的宽度 */
        width: 3em;
        /* 使盒子不占位置 */
        margin-left: -3em;
        /* 移动省略号位置 */
        position: relative;
        left: 100%;
        top: -20px;
        padding-right: 5px;
        /* 为了展示效果更好 */
        background: -webkit-gradient(linear, left top, right top, from(rgba(255, 255, 255, 0)), to(white), color-stop(50%, white));
        background: -moz-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);
        background: -o-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);
        background: -ms-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);
        background: linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);
        }
    </style>
</head>
<body>
    <div class="wrap">
        <div class="text">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Dignissimos labore sit vel itaque delectus atque quos magnam
            assumenda quod architecto perspiciatis animi.</div>
    </div>
</body>
</html>